Horstmann AS2-RF User Guide
ThermoPlus AS2-RF
User Operating Instructions
Programmable Room Thermostat
with wireless communication technology.
The Horstmann ThermoPlus AS2-RF is a wireless Programmable Room Thermostat
that has been designed to make its operation very simple for the householder.
The built in automatic clock means it will not need setting or
adjusting for BST and GMT time changes.
The ThermoPlus will provide a pre-programmed temperature prole preset by your installer
and day-to-day user adjustments are carried out using just three buttons.
The ThermoPlus AS2-RF is supplied in two parts. The receiver which is hard wired
to the combi or conventional system boiler and the AS2-RF thermostat which can be used
in any normal domestic environment within a typical 30 metre range without the need for
any costly or disruptive wiring.
1
The ThermoPlus AS2-RF
The instructions contained in this user guide are designed to help
with the programming and operation of the unit.
Part 1 of these instructions explains the day to day operation of the AS2-RF
Part 2 of these instructions describes programming the AS2-RF
Part 3 of these instructions is for understanding the receiver
The AS2-RF thermostat kit is made up of two parts:
1 x ASR-RF Receiver
1 x AS2-RF Transmitter
The AS2-RF has been designed with ease of installation in mind. No hard wiring is required
between the transmitter and the receiver. The receiver unit is hard wired to the boiler and
should be sited close to the existing wiring. The AS2-RF can then be positioned up to 30
metres away - Range will vary depending upon the composition, density and number of
walls between the AS2-RF transmitter and the receiver.
AS2-RF Transmitter
1 2 3 9
1 – Plus ‘+’ Button
2 – LED Indicator lights
3 – Installer Display
4 – ‘Warm/Cool’ Button
5 - Minus ‘-’ Button
2
4 6 8
5
7
6 – Standby Time/Set Button
7 – Increase/Decrease Buttons
8 – Prog/Exit Button
9 – Front ap shown open
Part 1 – Day to Day operation
The ThermoPlus AS2-RF has been designed to be a simple to use thermostat, requiring
minimal user intervention with a pre-programmed heating prole. Simple temperature
adjustments can be easily carried out by using the ‘+’ and ‘-‘ buttons. The indicator lights
react to any temporary user adjustments, with the LED indicators working in the following
way;
‘Warm’ is shown by two red lights and ‘Cool’ is shown by a single blue light (see Power
Down Mode below). The centre button marked ‘Warm/Cool’ allows you to toggle between
the warm and cool settings.
When one or more red lights are on, you can increase the temperature by pressing the ‘+’
button. For example, press once to go up by 1°C or press twice to go up by 2°C.
When the two or three red lights are on, the temperature can also be lowered by using
the ‘-‘ button. For example, press once to go down to the warm setting temperature and
press again to go down to 1°C below warm setting temperature. (Maximum adjustment
to warm temperature +/- 2°C). The blue light indicates the unit is working to the lower
set temperature. Please note that the ‘+’ or ‘-‘ buttons will have no effect on the lower
temperature setting.
Under the ap is a blue button (6). During the summer, or when you want your central
heating off for long periods, for example if you go on holiday, press the blue button and
close the ap. When you want to go back to normal operation, open the ap and press the
blue button again, remembering to close the ap once nished.
Both the Warm and Cool temperature settings can be permanently adjusted, this operation
is detailed on page 4.
Power Down Mode
During normal operation the AS2-RF will go into Power Down Mode, this is to maximise
the life of the 3 x AA batteries tted. Normal operation will continue during this mode, and
the heating will be unaffected. The result of the Power Down Mode will mean that the LED
indicators will not be displayed and LCD will not be illuminated, although the ‘Warm’ or
‘Cool’ temperature will be displayed.
To ‘wake up’ the AS2-RF press the ‘Warm/Cool’ button for 5 seconds, this will then
illuminate both the LED and LCD displays for a period. Any adjustment can then be made,
the Power Down Mode will commence again approximately 8 seconds after the last button
press.
3
Warm and Cool Temperature Adjustment
The Warm and Cool target temperature
settings on the ThermoPlus AS2-RF are
fully adjustable. To change a target
temperature it is rst necessary to press
the centre button to bring up the ‘Warm’
or ‘Cool’ setting (indicated by the red or
blue LED indicators).
By using the up/down keys under the
ap the Warm/Cool temperature can be
increased or decreased to the desired
temperature setting.
PLEASE NOTE – it is not possible to set the
warm setting to below that of the cool
setting or vice versa.
Once a new temperature has been set in
either the Warm or Cool setting the AS2RF will continue to use this setting until
the next manual adjustment.
Press here to select
Warm or Cool
To increase
Press
To decrease
Press
4
Audible Feedback
All buttons on the AS2-RF give an audible conrmation when pressed. A short bleep means
‘Yes’, a longer buzz means ‘No’ – the setting/adjustment cannot be done.
Frost Protection
The blue button situated under the ap will initiate the frost protection mode, when
pressed the word ’STANDBY’ will appear on the display, the thermostat has been preprogrammed with a frost protection temperature level of 7°C, this can be adjusted by
using the up and down arrow buttons. Minimum setting 5°C. It is not possible to set a frost
protection temperature above the cool setting.
Part 2 – Programming Mode
The ThermoPlus AS2-RF has been designed for minimal user intervention, however
should any changes to the existing programme be required please press button 6 and 8
simultaneously to enter the programming mode, this will allow you to;
• Check the current time/date/year
• Check the current prole
• Set a new pre-set prole or
• Set a user dened prole
PLEASE NOTE; Upon completion of any of the
adjustments above, please ensure that you exit
the programming mode by pressing buttons 6
and 8 simultaneously.
6
8
5
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